Decentraland is a virtual world built on the Ethereum blockchain, where users can create, experience, and monetize content and applications. In Decentraland, users own and control their digital assets, including virtual land, avatars, and items. This decentralized approach to virtual worlds allows for greater user autonomy and creativity, as well as the potential for new business models and revenue streams.

As for the number of Decentraland users, it is difficult to provide an exact figure, as participation in decentralized applications can be anonymous and difficult to track. However, Decentraland has seen significant growth since its launch in 2017, with thousands of users exploring the virtual world and participating in events and activities. As the adoption of decentralized technology continues to expand, it is likely that we will see even more users engaging with Decentraland and other decentralized applications.